#svg {
  width: 500px;
  height: 500px;
}

.pillar{
  fill:#5B79D6; 
}

.pillar rect:hover{
  cursor: pointer;
  fill:#5C7DB9;
}

.pillar rect.bg{
  fill:#ddd;
  opacity: 0.8;
}

#data-panel{
  padding:5px 10px;
  border:1px solid #ccc ;
  background-color: #fff;
  border-radius: 5px;
  position: absolute;
  display:none;
  left:0;
  top:0;
}